Allow runner default kubeconfig for deploy

.gitea/workflows/deploy-questions.yml

@@ -53,29 +53,29 @@ jobs:
         run: |
           rm -f "${IMAGE_TAR}"
 
-      - name: Write kubeconfig from secret
+      - name: Configure kubeconfig
         env:
           KUBECONFIG_CONTENT: ${{ secrets.KUBECONFIG }}
         run: |
-          mkdir -p /tmp/kube
-          printf '%s\n' "$KUBECONFIG_CONTENT" > /tmp/kube/config
+          if [ -n "$KUBECONFIG_CONTENT" ]; then
+            mkdir -p /tmp/kube
+            printf '%s\n' "$KUBECONFIG_CONTENT" > /tmp/kube/config
+            echo "KUBECONFIG=/tmp/kube/config" >> "$GITHUB_ENV"
+            echo "Using kubeconfig from KUBECONFIG secret."
+          else
+            echo "KUBECONFIG secret is not set for this repo; using runner default kubeconfig."
+          fi
 
       - name: Create namespace if missing
-        env:
-          KUBECONFIG: /tmp/kube/config
         run: |
           kubectl create namespace step3-questions --dry-run=client -o yaml | kubectl apply -f -
 
       - name: Apply Questions deployment & service
-        env:
-          KUBECONFIG: /tmp/kube/config
         run: |
           kubectl apply -f api/QuestionsApi/k8s/deployment.yaml -n step3-questions
           kubectl apply -f api/QuestionsApi/k8s/service.yaml -n step3-questions
 
       - name: Restart Questions deployment
-        env:
-          KUBECONFIG: /tmp/kube/config
         run: |
           kubectl rollout restart deployment/step3-questions -n step3-questions
           kubectl rollout status deployment/step3-questions -n step3-questions